java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:48:44,187 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:48:44,189 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:48:44,203 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:48:44,204 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:48:44,205 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:48:44,206 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:48:44,208 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:48:44,210 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:48:44,210 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:48:44,211 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:48:44,212 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:48:44,213 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:48:44,214 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:48:44,215 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:48:44,215 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:48:44,216 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:48:44,218 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:48:44,221 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:48:44,222 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:48:44,223 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:48:44,224 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:48:44,227 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:48:44,227 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:48:44,227 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:48:44,228 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:48:44,229 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:48:44,230 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:48:44,231 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:48:44,232 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:48:44,232 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:48:44,233 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 21:48:44,235 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 21:48:44,255 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:48:44,255 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:48:44,258 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:48:44,258 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:48:44,259 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:48:44,259 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:48:44,259 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:48:44,260 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:48:44,260 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:48:44,260 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:48:44,260 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:48:44,260 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:48:44,261 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:48:44,261 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:48:44,261 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:48:44,261 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:48:44,261 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:48:44,262 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:48:44,263 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:48:44,263 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:48:44,263 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:48:44,263 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:48:44,264 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:48:44,264 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:48:44,264 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:48:44,264 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:48:44,264 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:48:44,265 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:48:44,323 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:48:44,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:48:44,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:48:44,348 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:48:44,348 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:48:44,349 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label08_true-unreach-call.c [2018-10-26 21:48:44,416 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/761c3a64d/df6ad1a23a774c0086792de65ecfaabd/FLAG74fb66e29 [2018-10-26 21:48:45,192 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:48:45,193 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label08_true-unreach-call.c [2018-10-26 21:48:45,224 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/761c3a64d/df6ad1a23a774c0086792de65ecfaabd/FLAG74fb66e29 [2018-10-26 21:48:45,244 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/761c3a64d/df6ad1a23a774c0086792de65ecfaabd [2018-10-26 21:48:45,257 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:48:45,259 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:48:45,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:48:45,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:48:45,268 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:48:45,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:48:45" (1/1) ... [2018-10-26 21:48:45,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5132971b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:48:45, skipping insertion in model container [2018-10-26 21:48:45,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:48:45" (1/1) ... [2018-10-26 21:48:45,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:48:45,411 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:48:46,407 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:48:46,413 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:48:46,889 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:48:46,913 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:48:46,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:48:46 WrapperNode [2018-10-26 21:48:46,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:48:46,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:48:46,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:48:46,917 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:48:46,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:48:46" (1/1) ... [2018-10-26 21:48:46,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:48:46" (1/1) ... [2018-10-26 21:48:47,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:48:47,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:48:47,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:48:47,471 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:48:47,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:48:46" (1/1) ... [2018-10-26 21:48:47,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:48:46" (1/1) ... [2018-10-26 21:48:47,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:48:46" (1/1) ... [2018-10-26 21:48:47,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:48:46" (1/1) ... [2018-10-26 21:48:47,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:48:46" (1/1) ... [2018-10-26 21:48:47,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:48:46" (1/1) ... [2018-10-26 21:48:47,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:48:46" (1/1) ... [2018-10-26 21:48:47,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:48:47,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:48:47,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:48:47,776 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:48:47,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:48:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:48:47,855 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:48:47,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:48:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:48:56,639 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:48:56,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:48:56 BoogieIcfgContainer [2018-10-26 21:48:56,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:48:56,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:48:56,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:48:56,646 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:48:56,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:48:45" (1/3) ... [2018-10-26 21:48:56,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c277747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:48:56, skipping insertion in model container [2018-10-26 21:48:56,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:48:46" (2/3) ... [2018-10-26 21:48:56,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c277747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:48:56, skipping insertion in model container [2018-10-26 21:48:56,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:48:56" (3/3) ... [2018-10-26 21:48:56,650 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label08_true-unreach-call.c [2018-10-26 21:48:56,661 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:48:56,674 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:48:56,693 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:48:56,756 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:48:56,757 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:48:56,757 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:48:56,757 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:48:56,757 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:48:56,757 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:48:56,758 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:48:56,758 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:48:56,758 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:48:56,790 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-26 21:48:56,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-26 21:48:56,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:48:56,801 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:48:56,804 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:48:56,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:48:56,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1281577798, now seen corresponding path program 1 times [2018-10-26 21:48:56,813 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:48:56,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:48:56,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:48:56,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:48:56,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:48:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:48:57,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:48:57,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:48:57,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:48:57,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:48:57,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:48:57,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:48:57,356 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-26 21:49:13,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:49:13,013 INFO L93 Difference]: Finished difference Result 2085 states and 3898 transitions. [2018-10-26 21:49:13,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:49:13,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-10-26 21:49:13,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:49:13,050 INFO L225 Difference]: With dead ends: 2085 [2018-10-26 21:49:13,051 INFO L226 Difference]: Without dead ends: 1487 [2018-10-26 21:49:13,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:49:13,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2018-10-26 21:49:13,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1023. [2018-10-26 21:49:13,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-26 21:49:13,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1623 transitions. [2018-10-26 21:49:13,170 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1623 transitions. Word has length 59 [2018-10-26 21:49:13,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:49:13,171 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1623 transitions. [2018-10-26 21:49:13,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:49:13,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1623 transitions. [2018-10-26 21:49:13,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-26 21:49:13,180 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:49:13,181 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:49:13,181 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:49:13,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:49:13,182 INFO L82 PathProgramCache]: Analyzing trace with hash -580036831, now seen corresponding path program 1 times [2018-10-26 21:49:13,182 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:49:13,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:49:13,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:49:13,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:49:13,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:49:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:49:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:49:13,489 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:49:13,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:49:13,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:49:13,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:49:13,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:49:13,493 INFO L87 Difference]: Start difference. First operand 1023 states and 1623 transitions. Second operand 4 states. [2018-10-26 21:49:21,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:49:21,691 INFO L93 Difference]: Finished difference Result 2908 states and 4662 transitions. [2018-10-26 21:49:21,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:49:21,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2018-10-26 21:49:21,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:49:21,703 INFO L225 Difference]: With dead ends: 2908 [2018-10-26 21:49:21,703 INFO L226 Difference]: Without dead ends: 1887 [2018-10-26 21:49:21,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:49:21,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2018-10-26 21:49:21,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1887. [2018-10-26 21:49:21,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2018-10-26 21:49:21,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2573 transitions. [2018-10-26 21:49:21,757 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2573 transitions. Word has length 127 [2018-10-26 21:49:21,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:49:21,758 INFO L481 AbstractCegarLoop]: Abstraction has 1887 states and 2573 transitions. [2018-10-26 21:49:21,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:49:21,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2573 transitions. [2018-10-26 21:49:21,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-26 21:49:21,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:49:21,762 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:49:21,762 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:49:21,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:49:21,762 INFO L82 PathProgramCache]: Analyzing trace with hash -919847698, now seen corresponding path program 1 times [2018-10-26 21:49:21,763 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:49:21,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:49:21,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:49:21,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:49:21,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:49:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:49:22,212 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:49:22,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:49:22,212 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:49:22,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:49:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:49:22,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:49:38,920 WARN L179 SmtUtils]: Spent 16.32 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-26 21:49:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:49:39,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:49:39,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 21:49:39,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:49:39,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:49:39,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:49:39,623 INFO L87 Difference]: Start difference. First operand 1887 states and 2573 transitions. Second operand 7 states. [2018-10-26 21:49:49,771 WARN L179 SmtUtils]: Spent 8.07 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-26 21:50:15,009 WARN L179 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 78 Received shutdown request... [2018-10-26 21:53:11,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 21:53:11,445 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 21:53:11,450 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 21:53:11,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:53:11 BoogieIcfgContainer [2018-10-26 21:53:11,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:53:11,451 INFO L168 Benchmark]: Toolchain (without parser) took 266193.19 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -233.2 MB). Peak memory consumption was 794.9 MB. Max. memory is 7.1 GB. [2018-10-26 21:53:11,453 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 21:53:11,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1654.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-10-26 21:53:11,454 INFO L168 Benchmark]: Boogie Procedure Inliner took 555.14 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.6 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -859.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-26 21:53:11,455 INFO L168 Benchmark]: Boogie Preprocessor took 304.60 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 58.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. [2018-10-26 21:53:11,456 INFO L168 Benchmark]: RCFGBuilder took 8865.41 ms. Allocated memory is still 2.2 GB. Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 466.0 MB). Peak memory consumption was 466.0 MB. Max. memory is 7.1 GB. [2018-10-26 21:53:11,457 INFO L168 Benchmark]: TraceAbstraction took 254808.11 ms. Allocated memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: 303.6 MB). Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: -24.5 MB). Peak memory consumption was 279.0 MB. Max. memory is 7.1 GB. [2018-10-26 21:53:11,463 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1654.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 555.14 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.6 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -859.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 304.60 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 58.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8865.41 ms. Allocated memory is still 2.2 GB. Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 466.0 MB). Peak memory consumption was 466.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254808.11 ms. Allocated memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: 303.6 MB). Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: -24.5 MB). Peak memory consumption was 279.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 182]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 182). Cancelled while BasicCegarLoop was constructing difference of abstraction (1887states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (7261 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 254.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 235.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1236 SDtfs, 4496 SDslu, 884 SDs, 0 SdLazy, 10366 SolverSat, 2587 SolverUnsat, 86 SolverUnknown, 0 SolverNotchecked, 215.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 33.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1887occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 464 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 18.1s InterpolantComputationTime, 446 NumberOfCodeBlocks, 446 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 442 ConstructedInterpolants, 57 QuantifiedInterpolants, 1383976 SizeOfPredicates, 1 NumberOfNonLiveVariables, 193 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 112/168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown